Koshigaya Tennen Onsen Bijin no Yu; Yu no Hana
Koshigaya, Saitama, Japan
- Location
- Koshigaya, Saitama, Japan
- Water type
- sodium chloride
- Temperature
- 41 °C
- pH
- 7.3
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Bijin no Yu, in Koshigaya, Saitama, offers natural sodium-chloride water at 41°C. Indoor bath, outdoor rotenburo and sauna make up this hot-spring venue in the prefecture.
Insider tip — Koshigaya Tennen Onsen Bijin no Yu draws naturally occurring sodium-chloride water from deep beneath the Kanto plain, giving it the silky texture locals call bijin-no-yu — beauty water. The Yu no Hana section offers a variety of indoor and outdoor baths ideal for unwinding after a busy day in greater Tokyo. Its location near Koshigaya's shopping districts makes it a convenient after-work retreat for suburban residents. Arrive at closing time on weekdays to enjoy a quieter atmosphere.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 41 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).